A method for displaying virtual content to a user, the method includes determining an accommodation of the user's eyes. The method also includes delivering, through a first waveguide of a stack of waveguides, light rays having a first wavefront curvature based at least in part on the determined accommodation, wherein the first wavefront curvature corresponds to a focal distance of the determined accommodation. The method further includes delivering, through a second waveguide of the stack of waveguides, light rays having a second wavefront curvature, the second wavefront curvature associated with a predetermined margin of the focal distance of the determined accommodation.

A method for decoding a data stream representative of an image sequence. At least one current block of a current image in the image sequence is encoded using a predictor block of a reference image, the predictor block being identified in the reference image via location information. An information item enabling the reference image to be identified from a set of reference images is obtained. When the reference image satisfies a predetermined criterion, the location information of the predictor block is decoded using a first decoding mode, otherwise the location information of the predictor block is decoded using a second decoding mode, the first and second decoding modes including at least a different decoding parameter. The current block is then reconstructed from the predictor block.

A method for decoding a data stream representative of an image sequence. At least one current block of a current image in the image sequence is encoded using a predictor block of a reference image, the predictor block being identified in the reference image via location information. An information item enabling the reference image to be identified from a set of reference images is obtained. When the reference image satisfies a predetermined criterion, the location information of the predictor block is decoded using a first decoding mode, otherwise the location information of the predictor block is decoded using a second decoding mode, the first and second decoding modes including at least a different decoding parameter. The current block is then reconstructed from the predictor block.

Systems and methods for displaying a stereoscopic three-dimensional (3D) webpage overlay. User input may be received from a user input device and in response to determining that the user input device is interacting with the 3D content, at least one of a plurality of render properties associated with of the 3D content may be modified. The at least one render property may be incrementally modified over a specified period of time, thereby animating modification of the at least one render property.

Systems and methods for displaying a stereoscopic three-dimensional (3D) webpage overlay. User input may be received from a user input device and in response to determining that the user input device is interacting with the 3D content, at least one of a plurality of render properties associated with of the 3D content may be modified. The at least one render property may be incrementally modified over a specified period of time, thereby animating modification of the at least one render property.

A stereo imaging system comprises an observation instrument having an image acquisition unit for detecting first image data and second image data, which can be combined for stereo observation. There is provided at least one position sensor for detecting an orientation of the instrument in relation to a position reference. There is provided a control device that is operable in a first representation mode and a second representation mode, depending on the orientation of the instrument. The control device is configured for outputting an image signal, which comprises a stereo signal that is based on the first image data and the second image data in the first representation mode, and a mono signal that is based on the first image data or the second image data in the second representation mode. The control device is configured to erect images that are output with the image signal in the second representation mode, depending on the orientation.

Methods, systems, and techniques for generating two-dimensional (2D) and three-dimensional (3D) images and image streams. The images and image streams may be generated using active stereo cameras projecting at least one illumination pattern, or by using a structured light camera and a pair of different illumination patterns of which at least one is a structured light illumination pattern. When using an active stereo camera, a 3D image may be generated by performing a stereoscopic combination of a first set of images (depicting a first illumination pattern) and a 2D image may be generated using a second set of images (optionally depicting a second illumination pattern). When using a structured light camera, a 3D image may be generated based on a first image that depicts a structured light illumination pattern, and a 2D image may be generated from the first image and a second image that depicts a different illumination pattern.

Methods, systems, and techniques for generating two-dimensional (2D) and three-dimensional (3D) images and image streams. The images and image streams may be generated using active stereo cameras projecting at least one illumination pattern, or by using a structured light camera and a pair of different illumination patterns of which at least one is a structured light illumination pattern. When using an active stereo camera, a 3D image may be generated by performing a stereoscopic combination of a first set of images (depicting a first illumination pattern) and a 2D image may be generated using a second set of images (optionally depicting a second illumination pattern). When using a structured light camera, a 3D image may be generated based on a first image that depicts a structured light illumination pattern, and a 2D image may be generated from the first image and a second image that depicts a different illumination pattern.

Methods, systems, and techniques for generating two-dimensional (2D) and three-dimensional (3D) images and image streams. The images and image streams may be generated using active stereo cameras projecting at least one illumination pattern, or by using a structured light camera and a pair of different illumination patterns of which at least one is a structured light illumination pattern. When using an active stereo camera, a 3D image may be generated by performing a stereoscopic combination of a first set of images (depicting a first illumination pattern) and a 2D image may be generated using a second set of images (optionally depicting a second illumination pattern). When using a structured light camera, a 3D image may be generated based on a first image that depicts a structured light illumination pattern, and a 2D image may be generated from the first image and a second image that depicts a different illumination pattern.

Multi-camera optical systems comprising a center camera together with left and right side cameras. The left and right side cameras comprise free form lenses to provide off-axis imaging, where the resulting multiple images permit wide angle, normal, and zoom views of an object space. The center camera can also comprise free form optics such as a double symmetry lens, and overall the free form optics enable low f-number, wide field of view, improved off-axis performance, and other optical characteristics not achievable with rotationally symmetric lenses. The design can be implemented using existing manufacturing techniques.